For what it's worth U1Db is 99% declarative API and documents as well as queries use JSON syntax. Except for the scripting you need to add or delete items. I can't speak for the best way to parse RSS or ATOM but as my rule of thumb I would hesitate to recommend C++ first thing for a new application.
U1Db can also be used in addition to another storage mechanism just for
sync of course, whichever works out best.
ciao,
Christian
On 13.06.2013 13:39, Michael Zanetti wrote:
> At the risk that some people don't like to hear this, I would highly
> recommend
> to write the actual feed fetching and database storing part in C++/Qt and
> only
> expose a well defined model containing the RSS feeds to QML. Maybe one model
> per feed source or something like that.
>
> Writing all that SQL query stuff in javascript will end up being more complex
> and fail prone than writing a simple QML plugin in Qt.
>
> On Thursday 13 June 2013 11:34:59 Joey Chan wrote:
>> I'm a developer of RSS reader, I found a performance issue in qml database,
>> which blocks the main thread for seconds.
>>
>> *issue description:*
>> <code>
>> dbResult = tx.executeSql('INSERT INTO article (title, link, description,
>> pubdate, guid, feed_id) VALUES(?, ?, ?, ?, ?, ?)',
>> [title , link, description, pubdate, guid,
>> feed_id])
>> </code>
>> I use this code to insert a row of data into database, if just one row
>> needed, ok with that; but if I need many rows of data to be insert, the
>> database engine will execute this code many times and blocks the main
>> thread for seconds.
>>
>> *solution: *
>> 1. WorkScript. not support .import includes QtQuick.LocalStorage 2.0 >_<
>> 2. binding or batch execute. In Qt C++, a list can be binded to a
>> QSqlQuery, then only execute once to insert them into database, can anyone
>> teach how to do that in qml?
>> 3. U1DB. I haven't tried it, is it stable now?
signature.asc
Description: OpenPGP digital signature
-- Mailing list: https://launchpad.net/~ubuntu-phone Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-phone More help : https://help.launchpad.net/ListHelp
